Tag: the p-block elements

Questions Related to the p-block elements

When slaked lime is treated with chlorine, a compound is formed. Which of the following is correct about that compound?

It is used in bleaching cotton.
It is used as disinfectant.
It is a halide.
It is used for sterilization of water.

The weakest $Cl-O$ bond is found in :

oxoacids of halogens p- block elements-ii p-block elements the p-block elements chemistry

$ClO _{4}^{-}$
$ClO _{2}^{-}$
$ClO^{-}$
$ClO _{3}^{-}$

Which one is most stable to heat :

oxoacids of halogens p- block elements-ii p-block elements the p-block elements chemistry

$HClO$
$HClO _{2}$
$HClO _{3}$
$HClO _{4}$

Hypervalent ion is/are :

oxoacids of halogens p- block elements-ii p-block elements the p-block elements chemistry

$SO _3^{2-}$
$PO _4^{3-}$
$SO _4^{2-}$
$ClO _4^{-}$

Which one of the following oxoacids of chlorine is the least oxidising in nature ?

oxoacids of halogens p- block elements-ii p-block elements the p-block elements chemistry

$ HClO $
$HClO _2 $
$ HClO _3 $
$HClO _4$

Out of the chloric acid ($\displaystyle { HClO } _{ 3 }$) and perchloric acid ($\displaystyle { HClO } _{ 4 }$), $\displaystyle { HClO } _{ 4 }$ is more stable.

State whether the above statement is true or false.

oxoacids of halogens p- block elements-ii p-block elements the p-block elements chemistry

True
False

Which of the following is the correct statement?

oxoacids of halogens p- block elements-ii p-block elements the p-block elements chemistry

$ SO _2 $ is anhydride of sulphuric acid
$ NO _2 $ is anhydride of nitric acid
$ Cl _2O _7 $ is anhydride of perchoric acid
$ P _2O _5 $ is anhydride of orthophosphorus acid

Select the correct statement(s) :

oxoacids of halogens p- block elements-ii p-block elements the p-block elements chemistry

The overlap become better when the overlapping orbitals have comparable energy.
The other of increasing tendency of polymerizations $SiO^{4-} _{4}\, >\, PO^{3-} _{4}\, >\, SO^{2-} _{4}\, >\, ClO^{-} _{4}$.
With the increase in positive oxidation state the energy of the 3d-orbitals gradually decreases and it favours the $\pi$-bonding interaction.
The system where the $\pi$ bonding is not effective, the stabilization is attained through the single bonded structure i.e. through the polymerization.

Which products are expected from the disproportionation of chlorous acid?

oxoacids of halogens p- block elements-ii p-block elements the p-block elements chemistry

$HClO _3$ and $Cl _2O$
$HClO _2$ and $ HClO$
$HCl $ and $Cl _2O$
$HClO$ and $HClO _3$

The following acids have been arranged in the order of decreasing acid strength. Identify the correct order-
ClOH(I) BrOH(II) IOH(III)

oxoacids of halogens p- block elements-ii p-block elements the p-block elements chemistry

I > II > III
II > I > III
III > II > I
I > III > II

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